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Finding the Fourth Proportional to 1,264.22, 1,894.91 and 955.07

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Solution

The fourth proportional to 1,264.22, 1,894.91 and 955.07 is: 1,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.22 : 1,894.91 = 955.07 : x
  2. Step 2: Convert to fraction form
    1,264.22/1,894.91 = 955.07/x
  3. Step 3: Cross multiply
    1,264.22x = 1,894.91 × 955.07
  4. Step 4: Simplify right side
    1,264.22x = 1,809,757.44
  5. Step 5: Solve for x
    x = 1,809,757.44/1,264.22
  6. Step 6: Final answer
    x = 1,431.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.